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Strange SMD resistors code

F

Fred Bartoli

Jan 1, 1970
0
Looking at a mobo, trying to reverse some bit of it, I just notices that
the resistors values aren't noted following the ordinary 3 or 4 figures
code, but rather 2 figures and one letter, like 93A, 30C, 01C, 07B...

A quick search didn't show anything.

Anyone have pointers to this?
 
F

Fred Bloggs

Jan 1, 1970
0
Fred said:
Looking at a mobo, trying to reverse some bit of it, I just notices that
the resistors values aren't noted following the ordinary 3 or 4 figures
code, but rather 2 figures and one letter, like 93A, 30C, 01C, 07B...

A quick search didn't show anything.

Anyone have pointers to this?

Looks like hex...
 
P

Phil Allison

Jan 1, 1970
0
"Fred Bartoli = CRIMINAL ASSHOLE"


** **** OFF

- you pile of stinking

AUTISTIC FASCIST FROG SHIT





....... Phil
 
B

Ben Jackson

Jan 1, 1970
0
Looking at a mobo, trying to reverse some bit of it, I just notices that
the resistors values aren't noted following the ordinary 3 or 4 figures
code, but rather 2 figures and one letter, like 93A, 30C, 01C, 07B...

There's a standard set of 2-digit+1-letter codes that refer to values.
Search for EIA-96. If that's right, your resistors are 90.9, 20.0k,
10.0k, 1.15k.
 
P

PeteS

Jan 1, 1970
0
Fred said:
Looking at a mobo, trying to reverse some bit of it, I just notices that
the resistors values aren't noted following the ordinary 3 or 4 figures
code, but rather 2 figures and one letter, like 93A, 30C, 01C, 07B...

A quick search didn't show anything.

Anyone have pointers to this?

The codes on some resistors are rather like the codes on some ICs - they
do not convey meaningful information about the value of the part.
Those codes ring a bell and may be Vishay parts, so you might find the
answer there.

Cheers

PeteS
 
F

Fred Bartoli

Jan 1, 1970
0
Le Fri, 17 Aug 2007 15:12:18 -0500, Ben Jackson a écrit:
There's a standard set of 2-digit+1-letter codes that refer to values.
Search for EIA-96. If that's right, your resistors are 90.9, 20.0k,
10.0k, 1.15k.


Thanks.
Short after posting my question I've found some reference.
It seems to be used manly on 1% 0603 where there's no room for four
digits. Strange that I didn't notice it before.
 
J

Jeff L

Jan 1, 1970
0
Snip
It seems to be used manly on 1% 0603 where there's no room for four
digits. Strange that I didn't notice it before.


*** Exactly. I've seen them many times before.
 
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